Question

where do producers and consumers get the energy their cells need?
a. oxygen
b. water
c. sugar molecules
d. their surroundings

Explanation:

Producers (like plants) make sugar (glucose) via photosynthesis, and both producers and consumers break down sugar molecules (through cellular respiration) to get energy for cells. Oxygen is used in respiration but isn't the energy source. Water is a reactant, not an energy source. "Their surroundings" is too vague. So sugar molecules are the energy source for cells.

Answer:

C. sugar molecules